Manufacture of axminster loom tube frames



Oct. 3, 1944. s. s. GARRITY MANUFACTURE OF AXMINSTER LOOM TUBE FRAMES Original Filed April 7, 19:59

3 Sheets-Sheet 1 Oct. 3, 1944. s. s. GARRITY MANUFACTURE OF AXMINSTER LOOM TUBE FRAMES Original Filed April 7, 1959 5 Sheets-Sheet 2 1944- s. s. GARRITY 2,359,636

MANUFACTURE OF AXMINSTER LOOM TUBE FRAMES Original Filed April 7, 1939 3 Shets-Sheet 3 1220832503".- gym &. Qmm'x Patented Oct. 3, 1944 MANUFACTURE OF AXIVIINSTER LOOM TUBE FRAMES Spencer S. Garrity, Amsterdam, N. Y., assignor to Bigelow-Sanford Carpet 00., Inc., Thompsonville, Conn., a corporation of Massachusetts Original application April 7, 1939, Serial No. 266.561. Divided and this application May 21, 1942, Serial No. 443,873

2 Claims. (Cl. 113-112) This application is a division of my prior copending application Serial No. 266,561, filed April '7, 1939 now issued as Patent No. 2,314,139, March 16, 1943.

The present invention relates to Axminster looms, and particularly to the manufacture of variable length tube frames adapted for use in looms of diiferent widths.

The pile yarn in an Axminster loom is conventionally supplied on a series of tube frames, each of which carries, on one or more spools, the pile tuft yarns for a single pile row extending across the fabric. Each tube frame, accordingly, is of, a length approximating the width of the fabric to be woven. Axminster fabrics of different widths are woven on looms of conformingly different widths, each conventionally requiring a large number of tube frames of corresponding length.

The object of the present invention is to provide an Axminster tube frame which is variable in length and is thereby adapted for use in looms of different widths. By my invention I am able to effect a substantial reduction in the inventory of these parts required by the Axminster fabric manufacturer.

In the drawings:

Fig. 1 is a front elevation view of a tube frame of extended length embodying my invention,

showing the complete tube frame including the spool;

Fig. 2 is a view corresponding to Fig. 1 but showing the tube frame shortened in length;

Fig. 3 is a vertical section on the line 3-4 of Fig. 2;

Fig. 4 is a disassembled perspective view of the sections of the extended tube frame showing the securing sleeves, and

Figs. 5 to 13 are detail sectional views illustrating certain steps in my preferred method of manufacture.

In accordance with the preferred embodiment of my invention, the tube frame, complete with spool, as shown in Fig. 1, is composed of three sections designated a, b and c. The yarn guiding tubes or tins 2 for the section a are mounted on a plate 4, for the section'b are mounted on a plate 6 and for the section 0 are mounted on a plate 8, the tubes being secured to their respective plates by soldering or in any conventional manner. The plate 4 is secured to the bar section l2 by screws Illa and lob; the plate 6 is secured to the bar section l4 by screws I00 and Hid, and the plate 8 is secured to the bar section I 6 by screws We and If. The end bar sections [2 and it have the usual brackets l8 of conventional construction for releasably mounting the tube frame in the carrier chain, each of which brackets includes a tongue member- 20 adapted for reception within the links of the chain and a spring latch 22 to latch with the chain. The end bar sections l2 and I6 also carry plates 24, which are drilled to form bearings for the pintles 26 extending from the heads 30 of the spool. Spool brakes 9 may be provided if desired. The supporting brackets, spool bearings and brakes are of conventional construction and therefore require no further description for an understanding of my invention.

The spool designated at a is also in three sections, 34, 36 and 38. Each of the sections 34 and 38 is permanently secured at one end to its adjacent spool head 30 by suitable means which may be conventional.

To secure the three spool sections 34, 36 and 38 together in abutting alignment with each other I preferably employ internal sleeves 40 and 42 of the construction shown in detail in Fig. 4. These sleeves are made of spring steel of a suitable length to hold securely the spool sections together, preferably with a sweat joint to be described, and they are split as shown at 44 so as to be compressible to an external diameter slightly less than the internal diameter of the spool sections so that they can readily be received therein. The metal of which the sleeves are made preferably has sufficient resiliency so that expansion of the sleeve within the spool sections gives a tight friction flt.

The carrier bar sections l2, l4 and I6, as shown in Fig. 4, are similarly secured together by sleeves 50 and 52 which (Fig. 1) are received lntemally of the bar sections. Conforming to the rectangular cross section of the bar sections the sleeves 50 and 52 are of like rectangular cross section. Each sleeve is split at 58 to allow for the compression of the sleeves necessary for their reception within the carrier bar sections and these sleeves, like the sleeves 40 and 42, are made of spring steel so that they expand against the walls of the bar sections.

The screws Illa to if inclusive, which secure the tube carrying plates 4, 6 and 8, pass through screw-threaded holes 53 in the bar sections and the screws illb, lOc, Ind and Hie are also received in the holes SI of the sleeves and the latter screws thereby aid in preventing the assembled bar sections from pulling apart. in use. However, I prefer to employ as the primary securing means a sweat joint with their sleeves, as I have found that thereby the tube frame is enabled effectively tion is stored for future use.

employing sweat joints, the procedure is as follows:

Referring first to the manufacture of the spool, the sleeves 40 and 42 are preferably first cleaned with acid and then coated with molten lead and tin solder, as indicated at I for the sleeve 40 in Fig. 5. The solder is allowed to harden. The internal surfaces of the spool sections 34 and 30, adjacent their abutting ends, are then preferably also cleaned with acid. The solder-coated sleeve is then compressed, as in a vise, to close the split 44 (Fig. 6) and, while it is held closed, spool sections 34 and 36 are fitted over the sleeve from both ends (Fig. '7), hammering them on if necessary. The spool sections are then closed against each other so that their ends abut each other (Fig. 8) and thesleeve expands against the interior of the spool sections. Thereafter heat is applied externally of the abutting end portions of the spool sections over an area suflicient to remelt substantially all of the solder on the sleeve Subsequent cooling allows the solder to reharden and produces a tight soldered Joint between the sleeve and the spool sections. This process is repeated to Join the sections 36 and 38 to form the spool of extended length (Fig.

In like manner the tube frame bar sections are assembled by acid cleaning the sleeve 50 and the interior of the bar sections l2 and I4; applying solder to the sleeve 50 and allowing it to harden; assembling the bar sections l2 and I 4 over the sleeve 50, and remelting the solder on the sleeve 50, which process is then repeated to unite the sections l4 and I8 to form the extended carrier bar for the tube frame of Fig. 1.

The plates 4, 6 and 8 with depending tuft tubes are applied to the bar sections and secured by means of the screws Illa to I01, as indicated above, and the brackets l8 and brakes 9 are mounted in place. The spool, constructed as above and thereafter wound with yarn, is inserted in place with its pintles passing through the bearing holes in plates 24, the yarn from the spool is threaded through the tubes 2 in a conventional manner and the extended tube frame is ready for use.

In use it will be found that, although the tube frame with spool so constructed is as long as is required in the maximum width looms, its sectional joints are very secure and able to withstand severe loom usage.

The extended tube frame of Fig. 1 may readily be shortened to the length of Fig. 2 when necessary to adapt it for a loom of corresponding width. The spool 35a is first removed from the bearing plates 24 and heat is then applied around the spool barrel section 36 (Fig. 11) in the region marked a: (Fig. l) to melt the solder around that portion of sleeve 40 which is within the central spool section 38 and, while the solder is melted, the spool sections 34 and 36 are pulled apart (Fig. 12) leaving sleeve 40 within and pro- Jecting from spool section 34. Similarly, the spool is heated in the region indicated at 11 (Fig. 1) and sections 36 and 38 are pulled apart, leaving sleeve 42 secured to section 36, which sec- Sections 34 and 38 are then united by acid cleaning the interior shortening the spool.

if necessary to that portion of sleeve received within section 38.

In like manner the tube frame is shortened by first unscrewing the-screws Illa to I01 inclusive and removing plates 4, 8 and l carrying the yarn tubes 2; then separating the three bar sections l2, I4 and I8 and uniting sections l2 and IS in a manner similar to that above described for Thereafter the plates 4 and 8 are replaced by the screws Illa, I 017, lie and l0fi The spacings between the adjacent end tubes in sections a and b and the adjacent end tubes in sections b and c are the same and are equal to the constant spacing between the tubes in any one group. Accordingly, my novel tube frame, in whatever length, presents yarn tubes 2 in a continuous aligned series uniformly spaced from each other along the bottom of the tube frame. Thereby wipe-in of the tube frame is effected without interference with the warp.

The preferred embodiment of my tube frame is subject to some variation to suit the needs of individual users without departing from the spirit of my invention. Thus, it is conventional, with the greater lengths of ordinary tube frames, to employ a series of aligned spools in endwise abutment with each other rather than a single spool such as I have shown in Fig. l, and to support the abutting spool ends the tube frame is provided with one or more additional bearing plates, similar in construction and function to those which I have shown at 24, but disposed intermediate the ends of the tube frame. That type of construction may be embodied in the tube frame of my invention by mounting on the intermediate bar section I 4 such additional bearing plate. Of course, my tube frame may be composed of many more sections than the three illustrated.

Iclaim: 1

1. In the manufacture of a yam spool for use in Axminster looms, which spool consists of a plurality of metal barrel sections arranged successively in endwise abutment with each other to form a continuuos barrel of uniform external diameter with a spool head secured to each end of the barrel and of longitudinally-split springmetal sleeves, one at each joint within the abutting ends of two adjacent sections on each side of said joint and soldered to the interior surfaces of said abutting ends, the method which comprises coating a sleeve with solder while said sleeve is expanded to a diameter greater than the diameter of the bore of said sections, permitting the solder to cool and harden, compressing said sleeve circumferentially to a diameter less than the diameter of the bore of said sections, inserting said compressed sleeve into the ends of two sections, abutting said ends, permitting said sleeve to expand to press circumferentially against the inner surfaces of said section ends, melting the solder and permitting the solder to harden to unite said sleeve and said ends.

2. A method for varying the length of a yarn spool for use in Axminster looms, which spool consists of a plurality of metal barrel sections arranged successively in endwise abutment with each other to form a continuous barrel of uniform external diameter with a spool head secured to each end of the barrel and of longitudinally-split spring-metal sleeves, one at each joint within the abutting ends of two adjacent sections on each side of said joint and soldered to the interior surfaces of said abutting ends, which method comprises melting the solder between at least one sleeve and the abutting ends of the sections within which said sleeve is located, while the solder is molten separating said abutting ends thereby leaving two sections remaining each with an end to be united to the next successive section by a sleeve inserted in their ends and soldered thereto, uniting each of said remaining sections to the next successive section by abutting the ends of said sections over a longitudinally-split circumferentially-contracted spring-metal solder-coated sleeve, permitting said sleeve to expand to press circumferentially against the inner surfaces of the section in which it is located, melting the solder and permitting the solder to harden to unite said sleeve and said ends.

SPENCER S. GARRITY. 

